Assalamu alaikum wa rahmatullahi wa barakatuhu sheikh,
Can qadr be changed by making dua?, for eg if something bad is already written for me then I can I change that with dua?
JazakhAllah khair
Wa'alaykumsalaam Wa Rahmatullah Wa Barakaatouh.
Yes, A du'a may change someone's destiny as mentioned by the Prophet Muhammad (peace be upon him)
Nothing can change the Divine decree except dua”.[Musnad Ahmad, 5/677; Ibn Majah, 90; Jami` Al-Tirmidhi, 139. Classed as hasan by Albani]
Allah knows best